| Value | Category | Cases | |
|---|---|---|---|
| -9 | 724 | 
                                
                                18.3%
                             | |
| 0 | 15 | 
                                
                                0.4%
                             | |
| 1 | 31 | 
                                
                                0.8%
                             | |
| 5 | 5 | 
                                
                                0.1%
                             | |
| 7 | 12 | 
                                
                                0.3%
                             | |
| 9 | 3165 | 
                                
                                80.1%
                             |